Control mechanism for film feed



May 21, 1929. c. o. WINGREN CONTROL MECHANISM FOR FILM FEED OriginalFiled Nov. 2, 155125 ff W 4 I saw. 11..|i ll z W] NVENZOR.

Patented hhy 21, 198.

UNITED STATES 0. Gm, OI PASLDHA, camommi.

coarser.

208 mm: rm.

Application fled Icvember 8, 1885, Berta! I0. ,178. Renewed October-'8,1828.

My invention is particularly well adapted for use in connection with anendless film, or the like, which is wound upon the outside of 5!. reelIind iinwpingddsdfrom Itrhe glside of 5 sai reel, ing 00 own t on aprojecting machine after it leaves the inside of the reel and returnedto the outside of the reel after it as been projected, thus making itpossible to run an endless film continuousl as long as may be desired.

One of e serious difliculties in connection with the continuous runningof an endless film as above-indicated is to regulate the speed withwhich the film is taken out of the inside of the and the object of myinvention is to provide means for automati (Sally regulatin andcontrolling the feed of the film .from t e inside of the reel. I haveconceived the idea of the inner convolution of the film in themside ofthe reel for controlling and re ating the speed with whieh'the film ised from the inside of the reel, that is, the inner convolution of thefilm is used to actuate the mechanismwhichcontrols the movement of theinner convolutions of said film. In machines of this character a. reelof is laced upon a: turntable, being loosely p thereu 'n so that it canbe moved relative to said? atform. makes it possible to reta therotative movement of the film upon said turntable, or to increase therotative move-' ment of the film upon said turntable. It is, however,only necessary to thus r ate certain of the inner convolutions 0 saidfilm and I accomplish this'in connection with -m invention by providing.a mecha nism w ch will either speedwllllp the inner convolutions of thefilm or operate a brake element and retard the revolutions of saidinner.convolutions.-

In order to explain. m invention more in detail, I have illustra on theaccompanying sheet of drawings a for accomglishing the ve-namedfunction,-suc h mec anism being controlled in its 0 ration by theinnermost convolution o the embodiment of the invention.

.Figu reel n which my to? or engibodiment; t 4 t 1 re 1s a en ary rspecive ,viewgdfii:v the bottom. of .a turn 1e mechafilm, and I will nowdescribe this particular I drive wheel- 22, from the central shaft 8,

the10 and 17 and the shaft, 13,- on 5 invention is shown in one whicsaid friction dri re 1 is a perspective view of a vided with a filmsprocket, 20,-sup

Him, sho i g a by which the speed of the turntable can be re ated; v

igure 3 is a perspective view of one form of the mechanism embod theinvention;

Figure 4 is a view of a art of the mechamsm from the opposite si e; and

F' 5 is a perspective view of a part of said mechanism from anotherangle; Referrin now more in detail to the draw-: ings, I the particularembodias ment of the invention used for illustrative purposes. Aplatform or turntable element 6, is provided, having a central hub-likeportion, 6, on its under side. This is mounted to turn upon a trunnion7, formed on a fixed frame composed of the members designated 14, saidtrunnion being bored to receive a oentral shaft, 8,therethrou h, saidshaft being adapted at its lower e as at 9, to be connected with a drimeans (not shown) and provided with d geveled gear, 10. .At its up rend, said shaft 8 is prorocket, 11, and with a beveled'gear, 12 b0 hsecured thereto and turning therewi l 80.

Referring now to Fi .2, a shaft 13, is

mounted on the undersi e of the turntable,

6, and supported in the frame 14, from afixed ring, 15, around the edgeof'said tumtable', and in two cross members, 16, 16;

The mnenend of said shaft 13, is provided with a beveled gear, 17, inmesh with the beveled gear, 10, and its outer end is provided withfabeveled 18, which meshes with a-similar gear, 1 for drivin a second 0 in8 a e ring frame, 21, as'indicated, whereby as the central shaft 8 isdriven, the two film.

s rockets I11 20,are driven at the same said. shaft 13, is movably 5inounted a friction drive wheel, 22, with a shifting yoke, 23, having athreaded sleeve, 24;, on a s'crew shaft, 25, with its bearmgs m themembers, 16, 16, andprovidedwith a hand wheel 26, whereby said frictionme drive wheel, 22, can be adjusted to different positions @ross theunderside of the -tu rntable 6, which is driven by said friction vewheel is mounted with spline connection. I

A reel'of film, F, is shown mounted upon said turntabl 6, withconvolution p aroun the film apmcht,

' 9 0', and no inasmuch as the speed-of the turntable. and

Y en

fpresentinvention and need not be shown more in detail. The drivingmechanism as shown in Fi 2, is also no particular part of the invent1onof this application and need not be described more than it has been, but

its regulation is'used in connection with different filmsv used on themechanism, I have shown the mechanism and described its operation.

I will. now describe the invention proper, referrin particularl to Figs.3, 4 and 5, in which a preferred or practical embodiment thereof isclearly illustrated.

Mounted upon a stationary center table, 7, seated in the turntable 6,and secured to the fixed trunnion 7, of the frame members, 14, by meansof a set screw, 7", is a supporting member or yoke having a baseportion, 31, and two upwardly projecting arms 32 32. Mounted between theupper ends oi said arms, 32, 32, is a sleeve bearing, 33, having thepivot arms, 34, 34, and having a shaft, 35, therethrongh, said shaftbeing provided at one end with a beveled gear,

36, meshing with the gear, 12, on the up per end of thecentral driveshaft 8. On

the outer end of said shaft 35, is adjustably mounted a tapered frictiondrive member,

37, of soft flexible material, and adaptedto be moved into and out oiengagement with the top edges of the inner convolutions ofthe film, F,for movingjthe same in a manner hereinafter again referred to.

Also mounted on said center-table, 7, is a standard, 38, having a forkat its upper end, in whlch is pivotally mounted a brake lever, 39,having on its outer end a brake 40, of suitable soft material, andadapted to be moved into and out of braking contact with the up or edgesof the inner convolutions of sai film, F, as, againreferred to. Theinner end of this brake lever', 39, is connected by means of a link, 41,with a pivoted yoke, 42, pivoted between, the arms, 32, 32, said yoke,42, having at one end a downwardly extending finger, 43, connected bymeans of a link, 44,. to a flat member, 45, pivotally mounted flatwiseon said center table, 7, as indicated.

The bearing sleeve, 33, is also oonnec by means of a link, 46, to saidpivoted yoke,

42, whereby as said yoke, 42, is moved downwarg-lf, the brake lever pad,40, is raised, w e

the friction drive member, 37,

maaese is moved downwardly into contact with the film F. en said yoke,42, is raised, the action is reversed, and the brakelever pad is moveddown upon the film, and the drive member, 37, is raised from said film.Mounted on the base, 31, is a vertical pin and coiled spring, designatedas a. whole,

47 with a washer bearing member, 48, bear- 7 in yieldingly upwardly onsaid pivoted o e, 42, for the purpose of balancing said rake lever andsaid drive member, 37, and holding them normally and yieldingly out ofengagement with the film, when said film is running correctly 05 or thereel.

Mounted on the flat member, 45, which is pivoted on the fixed centertable, 7, are three vertical guide rollers, 49, 50 and 51,

movin as a unit with said member, 45, and

throng which the film, F,-is directed as it leaves the inner circle orconvolution ofthe reel, as clearly seen in Fig.1. The

filni passes between roller 49, and the two rollers, 56 and 51, andthence between two f rollers, 52 and 53, and the filmsprocket, 11,

said rolls, 52 and 53, serving to hold the in proper engagement withsaid. film sprocket, 11, and being mounted on the free end of a springsup orting member, 54, held normally up to the lm sprocket by means of asprin latch, 55, the freeend of which is adapts to be slightlydepressed, so as to permit the supporting member, 54, and said rollers,52 and 53, to be moved away from the film sprocket 11, as indicated inlight broken lines in hig. 5, to permit the placin of the film thereon.

ounted .on said center table, 7 is a guide orguard roller, 56, aroundwhich the inner convolution of the film,'F, moves, as seen in Fig.1,before it loops between the rollers 49 and 50, on its way to the filmsprocket,

11. An inclined roller, 57, is also provided in the path of the film asit comes from said film sprocket, 11, and is directed upwardly over thebody of the film, as will be clear from Fig. 1. Other guard rollers, as58 and 59, are provided on said center table, around the inner circle ofthe film, as

indicated for holdin the inner convolution hfthe film free of t emechanism and for guiding it around to the rollers 49, 50 and 51, whichdirect it to thefilm sprocket, 11. The-use and operation of theinvention mav be brie fly described as follows:

The film is placed upgn the turntable, 6, the outer convolution placedaround .the film sprocket, 20, thero ere, 27. and 28,

bein adjustable away from saidsprocket for t s purpose in amannersimilar to the ad ustment of rollers, 52 and 53, Fig. 5.

The inner convolution of said film is then inserted edgewise downbetween 49 and 50, and then the 'rollers,"52' and 53, are moved awayfrom the sprocket, .11, and saldfilm inserted down between said rollersclined roller, 57, and directed out over the body of the film reel andthen to the machine in which it is to be used, usually. be-

i the turntable 6, and the body of the film reel low. Sufiicient film isleft in the loop which runs to the projecting machine tofifililililction properly and without pull on the The inventionfunctions as follows;

is turning faster than the'film is P888111 over sprocket, 11, the innerconvolution wi loop itself forwardly of the rollers, 49 and 50, asindicated in, light broken lines inFig.

' the other hand, if sa 1. This will move said rollers, 49, '50 and 51,on the member, 45, Fig. 3, with the result that it will rock the yoke,42, and move the brake lever, 39, and the brake pad, 40, down upon theinner convolutions of the film, while moving the driving member, 37,

away from the. film. This braking action causes the forwardly movin loopto be taken up and the film to again assume the position indicated infull lines, Fig. 1. On

id turntable, 6, and the reel of film, F, is moving too slowly, the

drag onthe inner convolution of the film.

\ will pull said rollers, 49, 50 and 51 back .wardly, rock the yoke 42'downwardl release or move'the brake 'pad 40, upwardl and move thefriction drive element, 3 down upon the inner convolutions of the film,and as this is being driven from the central shaft, 8, and thegears, 12and 36, it

will feed the film forwardly by the driving contact with the edges ofthe inner convolutions of said film. Thus I'have provided a practicaland successfulmeans for automatishowin cally regulating and controllingthe feed of a film from a reel wherein'the feed is from the inner circleof the reel and the take up is around the outer circle of said reel,making it possible to use continuously an endless film, thecontrol beingby means of applying either a drive or a brake action to the edge of thefilm, and while I have shown one practical form or embodiment of myinvention on the accompanying drawings for illustrative purposes-only, Iam aware that changes in details of construction and arrangement can bemade without departing from the s irit of the invention, spa I do not,there ore, limit the invention to the made, except as I may be limitedby the ereto appended claims. 1

I claim:

1. In combination, a turntable, a reel of element ada ted to be movedinto engagement with t e edges of the convolutions of said film forincreasing its movement;

and means controlled by the film for automatically operating said brakeelement or -increase-its movement, means controlled by the innerconvolution-of saidfilinfor automatically operating said brake elementor said driving element as said film increase or slows up its movement.

3. In combination with a turntable and reel of film thereupon, means forcontrolling the movement of the film which includes a brake elementadapted to be moved a ainst the film, and operating means for said rakeelement, said operating means bein moved by the inner convolution ofsaid 4. In combination with a turntable "and reel of film thereupon,means forcontrolling the movement of the film which includes a filmdriving element adapted to be moved into driving engagement with thefilm, and controlling means for said driving element, said controllingmeans bein moved by the inner convolutlon of said 5. In combination withmeans for holding and driving an endless film including a central filmsprocket, means for regulating the movement of said film, said meansbein adapted to be actuated by the movement 0 the film loop between theinner convolution of said film and the central film sprocket.

6. In combination, a turntable, a reel of film thereon, a central filmsprocket means for driving the same, means within the inner circle ofsaid film for guiding and directing the film from the inner circlethereof to said central sprocket, means for'guiding and support, saidfilm being adapted to feed from the center and to return to the outercircumference thereof, means for driving said support and said film,means for regulating the movement of the film-relative to the sup ortsaidmeans including an element adapte to be moved into and out ofoperating engagement with the edges of the convolutions of said film,and means whereby the inner convolution of the film operates saidregulating means.

8. Means for holding and 0 rating an endless reel ofgfilm ineludin aed'table, a turntable to receive the a und said the center and taking uparound the outer circle thereof, and means mounted on said means forautomatically porting and turning fixed table in the center of said reelfor regulating' the iced of said film from the center, said means.including movable elements adapted to be moved into and out of enga mentwith the edges of the inner convoliitions of the film, v v

-9. Means for holding and operating an endless reel-.offilm including afixed table, a turntable-"to receive the film around said fixed table,said reel of film feeding from the center and taking up around the outercircle thereof, and means mounted on said fixed table in the center ofsaid reel for regulatin the feed of, said film from the center, meansincludinga brake element and a driving element adapted to be movedalternately into'and out of engagement with the edges of the innerconvolutions of said film, means for actuating said regulating means assaid film decreases or' increases its movement from a normal movement,said actuating means being set into operation by the movement of theinner convolution of said film.

10. In combination with means for sup-- an endless reel of film,

means for re ting the feed of said film from the center of said reel,mid means including a brake element adapted to be moved against the filmto retard its movement, a driving element adapted to be moved againstthe film to increase its movement, and means actuated by the movement ofthe inner convolution of said film for operating said brake element andsaid driving element.

11. In ceimbination withdEmealncseIfo; supan'turnm'ganen ess cfilm,means for regulating the feed of said film from the center of said reel,mid means including a brake element adapted to be moved against the filmto its movemen brake element as the 0 said I n i porting and turning anendlew reel of film,

a fixed table in the center of said reel,'guide rollers movably mountedon said table and ide through which said film moves from the center ofthe reel, regulating means adapted to be moved into and out of operatingengagement with the film, and connections whereby said movable guiderollers move.

said regulating means as the inner convolution of said film r loopsforwardly, substantially as descn H 13. In combination, a revolubleturntable to receive a reel of endless film thereupon, a central filmsprocket for moving said film from the center out, guidin means withinthe inner convolution of sai film upon said platform through which saidfilm passes to said central film sprocket and means connected therewithand operable thereb for automatically controlling the 0 said 14. Incombination, a revoluble turntable to receive a reel of endlws filmthereupon, a central sprocket for;moving said film irom the center out,gui mechanism within the inner convolution 0 mid film upon said platformfor guiding said film to said sprocket, means actuated by the loop ofsaid filmfercontrollingtheofthefilmasit moves from said reel, and meansfor m l 1 theretumingfilmtotheoutsideofsaid v' si PM y ll; engLosgsCouna,this27th day of a 19 0. WINGBEN.

